BAL rating now online
A NEW WoodSolutions calculator can give you a quick and easy way to calculate your building site bushfire attack level online.
The Bushfire Attack Level (BAL) of a building site is determined by using Australian Standard AS3959. The BAL rating has implications for both the design of a building and the specification of materials. With the new WoodSolutions calculator you can quickly calculate the BAL rating and then see how changing variables – such as the building location on the site – affects the BAL.
The Bushfire Attack Level (BAL) of any location on a building site depends on factors including the site slope, the distance from vegetation and the type of vegetation. Australian Standard AS3959 provides information and methodology to calculate the BAL of a home and specifies the construction and/or retrofitting requirements.
The new WoodSolutions BAL calculator is based on the information provided in AS3959 and gives home owners, architects, building designers, developers and others a convenient way of estimating the BAL without having to manually look up tables.
Variables such as the site slope can be entered accurately, not to the nearest 5º, and then changed so that you can immediately see the effect on the BAL.
“The BAL calculator will enable home builders, architects and designers to see how different placements or orientations of a home on a site can change the BAL,” said Boris Iskra, National Manager Codes and Standards at Forest and Wood Products Australia Limited, the industry body resourcing WoodSolutions.
However, Boris did point out that the WoodSolutions BAL calculator, while shown to be very accurate in testing, should be used as a preliminary design guide with final BAL calculations confirmed with the Australian Standard.
The WoodSolutions BAL calculator is available online at: https://www.woodsolutions.com.au/ Articles/Resources/BAL-BushfireCalculator-V1